Economic Returns from Reducing Poultry Litter Phosphorus with Microbial Phytase
نویسندگان
چکیده
منابع مشابه
Prospects for phosphorus recovery from poultry litter.
Land disposal of poultry litter is an environmental concern often associated to excess phosphorus (P) in soils and potential water pollution in regions with intense poultry production. Although poultry litter can be moved off the farm and traded as fertilizer, its transportation becomes less economical with increasing distances from the farm. Thus, new litter management alternatives are needed ...
متن کاملEffect of chemical and microbial amendment on phosphorus runoff from composted poultry litter.
Environmental impacts of composting poultry litter with chemical amendments at the field scale have not been well quantified. The objectives of this study were to measure (i) P runoff and (ii) forage yield and N uptake from small plots fertilized with composted and fresh poultry litter. Two composting studies, aerated using mechanical turning, were conducted in consecutive years. Composted litt...
متن کاملPhytase and Other Phosphorus Reducing Feed Ingredients
This fact sheet has been developed to support the implementation of the Natural Resources Conservation Service Feed Management 592 Practice Standard. The Feed Management 592 Practice Standard was adopted by NRCS in 2003 as another tool to assist with addressing resource concerns on livestock and poultry operations. Feed management can assist with reducing the import of nutrients to the farm and...
متن کاملDevelopment of a phosphorus index for pastures fertilized with poultry litter--factors affecting phosphorus runoff.
Currently, several state and federal agencies are proposing upper limits on soil test phosphorus (P), above which animal manures cannot be applied, based on the assumption that high P concentrations in runoff are due to high soil test P. Recent studies show that other factors are more indicative of P concentrations in runoff from areas where manure is being applied. The original P index was dev...
متن کاملNitrogen and phosphorus runoff from cropland and pasture fields fertilized with poultry litter
Application of litter and other organic by-products to agricultural land off site of animal production facilities has created both environmental concerns and agro-economic opportunities, but limited long-term, field-scale data are available to guide management decisions. Thus, the objective of this study was to determine the water quality effects of repeated annual poultry litter application as...
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ژورنال
عنوان ژورنال: Journal of Agricultural and Applied Economics
سال: 1997
ISSN: 1074-0708,2056-7405
DOI: 10.1017/s1074070800007768